Oxygen Panel

Question 1

What is the guarded MASK MAN ON pb?

Answer 1

Normal Mode is Auto. Mask doors open when the Cabin Altitude exceeds 14,000ft

if pressed, manually releases the masks

Question 2

What is the Passenger SYS ON button?

Answer 2

Not a button. It illuminates in white when the oxygen mask doors is activated

Question 3

What is the CREW SUPPLY pb?

Answer 3

When selected on, (lights out), supplies low pressure oxygen to the crew masks